Electrochemical characterization for polybithiophene film on porous oxide layer of 304 stainless steel formed by square wave passivation

2010 ◽  
Vol 63 (2) ◽  
pp. 155-160 ◽  
Author(s):  
C. Liang ◽  
W. Chen ◽  
N. Huang
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Electrochemical Characterization ◽  
304 Stainless Steel ◽  
Square Wave ◽  
Porous Oxide

scholarly journals The Atmosphere’s Effect on Stainless Steel Slabs’ Oxide Formation in a CH4-Fuelled Reheating Furnace

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 621
Author(s):  
Aleksi Laukka ◽  
Eetu-Pekka Heikkinen ◽  
Timo Fabritius
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Depth Profiling ◽  
Layer Growth ◽  
304 Stainless Steel ◽  
Oxide Growth ◽  
Breakaway Oxidation ◽  
Positive Effects ◽  
Steel Slab ◽  
Single Temperature

Utilising the oxyfuel practice for CH4-fuelled combustion has positive effects on the emissions, efficiency and cost of high temperature furnace practices. However, especially in older installations, oxyfuel usage requires retrofitting and alters the atmosphere in which the oxidation of the steel occurs, when compared to using air as the oxidiser. Stainless steel slab oxide growth during reheating was studied in different atmospheres. The simulated post-burn atmospheres from oxyfuel, lean oxyfuel and air-fuel practices were used to compare oxide-scale layer growth and morphology during simulated typical AISI 304 stainless steel slab reheating prior to hot rolling. Thermogravimetric measurements, glow discharge optical emission spectrometer (GDOES) and field-emission scanning electron microscope energy dispersive X-ray (FESEM-EDS) methodology were applied to discern differences between oxide growth and inner oxide layer morphology between the three practices. Switching from air to oxyfuel practice at a single temperature had the same increasing effect on the scale formation amount as a 25 °C temperature increase in air atmosphere. Inner oxide layer depth profiling revealed C, Si and Ni to be the main elements that differed between temperatures and atmospheres. A morphology study showed Si and Ni behaviour to be linked to breakaway oxidation.

Supercapacitance behavior of porous oxide layer grown on 302 type stainless steel substrate

2013 ◽  
Vol 236 ◽  
pp. 103-111 ◽  
Author(s):  
Biplab Sarma ◽  
York R. Smith ◽  
Abraham L. Jurovitzki ◽  
Rupashree S. Ray ◽  
Swomitra K. Mohanty ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Type Stainless Steel ◽  
Porous Oxide

scholarly journals Improvement of Corrosion Resistance of Stainless Steel Welded Joint Using a Nanostructured Oxide Layer

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 838
Author(s):  
Jun Heo ◽  
Sang Yoon Lee ◽  
Jaewoo Lee ◽  
Akram Alfantazi ◽  
Sung Oh Cho
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Oxide Layer ◽  
Electrochemical Impedance ◽  
304 Stainless Steel ◽  
Gas Tungsten Arc ◽  
Nanostructured Oxide ◽  
Corrosion Behaviors ◽  
Surface Morphologies ◽  
Type 304

In this study, we fabricated a nanoporous oxide layer by anodization to improve corrosion resistance of type 304 stainless steel (SS) gas tungsten arc weld (GTAW). Subsequent heat treatment was performed to eliminate any existing fluorine in the nanoporous oxide layer. Uniform structures and compositions were analyzed with field emission scanning electron microscope (FESEM) and X-ray diffractometer (XRD) measurements. The corrosion resistance of the treated SS was evaluated by applying a potentiodynamic polarization (PDP) technique and electrochemical impedance spectroscopy (EIS). Surface morphologies of welded SS with and without treatment were examined to compare their corrosion behaviors. All results indicate that corrosion resistance was enhanced, making the treatment process highly promising.

Effects of Nitrogen Ion Implantation in 304 Stainless Steel at High Temperatures

1989 ◽  
Vol 157 ◽  
Author(s):  
Sadhna Shrivastava ◽  
Ram D. Tarey ◽  
M.C. Bhatnager ◽  
Amttaeh Jain ◽  
K.L. Chopra
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Depth Profiling ◽  
304 Stainless Steel ◽  
Beam Power ◽  
Target Temperature ◽  
X Ray Diffraction ◽  
Glancing Angle ◽  
Nitrogen Ion ◽  
Complete Precipitation

ABSTRACTWe studied the effect of varying the target temperature (by changing the beam power) on the structure and properties of nitrogen ion implanted 304 stainless steel. With a beam power of 0.1 W/ cm2 the target temperature is restricted to 150°C. After a dose of 3. 5x1017N2+/cm2 the microhardness measured at 10g increases by 15%. With a beam power of 1.1 W/cm2 the target temperature is 500°C. After the same dose as before, the irdcrohardness increase is 40%. Glancing Angle X-ray Diffraction and Auger depth profiling results suggest that the increased hardness is due to the presence of nitrogen in solution as opposed to complete precipitation. A sample deformed by compression formed an enhanced oxide layer during implantation. This oxide layer appears to have a capping action against the out-diffusion of nitrogen.

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